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Use unified dataflow framework in check_consts

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This commit is contained in:
Dylan MacKenzie 2019-11-11 11:50:27 -08:00
parent 7d5885727d
commit 355cfcdf43
2 changed files with 12 additions and 10 deletions
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7
src/librustc_mir/transform/check_consts/resolver.rs
View File

@ -158,7 +158,7 @@ impl<Q> old_dataflow::BottomValue for FlowSensitiveAnalysis<'_, '_, '_, Q> {
const BOTTOM_VALUE: bool = false;
}
impl<Q> dataflow::Analysis<'tcx> for FlowSensitiveAnalysis<'_, '_, 'tcx, Q>
impl<Q> dataflow::AnalysisDomain<'tcx> for FlowSensitiveAnalysis<'_, '_, 'tcx, Q>
where
Q: Qualif,
{
@ -173,7 +173,12 @@ fn bits_per_block(&self, body: &mir::Body<'tcx>) -> usize {
fn initialize_start_block(&self, _body: &mir::Body<'tcx>, state: &mut BitSet<Self::Idx>) {
self.transfer_function(state).initialize_state();
}
}
impl<Q> dataflow::Analysis<'tcx> for FlowSensitiveAnalysis<'_, '_, 'tcx, Q>
where
Q: Qualif,
{
fn apply_statement_effect(
&self,
state: &mut BitSet<Self::Idx>,

15
src/librustc_mir/transform/check_consts/validation.rs
View File

@ -33,11 +33,10 @@ struct QualifCursor<'a, 'mir, 'tcx, Q: Qualif> {
}
impl<Q: Qualif> QualifCursor<'a, 'mir, 'tcx, Q> {
pub fn new(q: Q, item: &'a Item<'mir, 'tcx>, dead_unwinds: &BitSet<BasicBlock>) -> Self {
pub fn new(q: Q, item: &'a Item<'mir, 'tcx>) -> Self {
let analysis = FlowSensitiveAnalysis::new(q, item);
let results =
dataflow::Engine::new(item.tcx, &item.body, item.def_id, dead_unwinds, analysis)
.iterate_to_fixpoint();
let results = dataflow::Engine::new_generic(item.tcx, &item.body, item.def_id, analysis)
.iterate_to_fixpoint();
let cursor = dataflow::ResultsCursor::new(*item.body, results);
let mut in_any_value_of_ty = BitSet::new_empty(item.body.local_decls.len());
@ -146,12 +145,10 @@ fn deref(&self) -> &Self::Target {
impl Validator<'a, 'mir, 'tcx> {
pub fn new(item: &'a Item<'mir, 'tcx>) -> Self {
let needs_drop = QualifCursor::new(NeedsDrop, item);
let has_mut_interior = QualifCursor::new(HasMutInterior, item);
let dead_unwinds = BitSet::new_empty(item.body.basic_blocks().len());
let needs_drop = QualifCursor::new(NeedsDrop, item, &dead_unwinds);
let has_mut_interior = QualifCursor::new(HasMutInterior, item, &dead_unwinds);
let indirectly_mutable = old_dataflow::do_dataflow(
item.tcx,
&*item.body,